Title :
Dual frequency gyrotron development for JT-60SA
Author :
Kobayashi, T. ; Isayama, A. ; Sawahata, M. ; Suzuki, S. ; Terakado, M. ; Hiranai, S. ; Wada, K. ; Sato, Y. ; Hinata, J. ; Yokokura, K. ; Hoshino, K. ; Kajiwara, K. ; Sakamoto, K. ; Moriyama, S.
Author_Institution :
Japan Atomic Energy Agency, Naka, Japan
Abstract :
A new dual frequency (110 GHz and 138 GHz) gyrotron development began for JT-60SA. An output power and efficiency higher than 1 MW and 30% with a peak heat load lower than 1.4 kW/cm2 were obtained for both frequencies in calculation. High mode conversion efficiencies of the quasi-optical mode converter (96.8% for 110GHz and 98.3% for 138GHz), which is higher than the previously developed 110 GHz long pulse gyrotron (96.5%), was obtained. The new gyrotron was fabricated and operation started from the middle of June 2012.
Keywords :
gyrotrons; JT-60SA; dual frequency gyrotron development; frequency 110 GHz to 138 GHz; quasi-optical mode converter; Cavity resonators; Converters; Gyrotrons; Heating; Oscillators; Plasmas; Power generation;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380412
